I'm using XnConvert for quite some time, but now there is an issue, possibly after updating to OS High Sierra.

I use the application in conjunction with the export function in Adobe Lightroom; in this function you can define an application to automatically open after the exporting is done, in this case xConvert.
Normally when xConvert opens, you see then the image-file appear in the input window. But now the windows stays empty.
I think I have seen this phenomenon in the past. After an update it was solved, however I cannot recall when.

The same happens when you right-click on an image in the finder and select open with … XnConvert.app; the input windows also stays empty.

I completely removed XnConvert and installed it new, but problem is still there.
Any ideas?

I have to correct my previous answer:
I can drag a picture the input-window of the opened XnConvert application.
I'm not shure what happens, when i drag a image on the XnConvert icon; I will let you know tonight.

Hello Pierre,
I completely removed the application and now installed it from the app store instead.
This time it is working like before!
Don't know what the problem was, maybe something with permissions or trusted website?